Business and Personal Finance Dictionary

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• TICKS
  
  Refer to various price changes or price change sequences. Whereas a simple tick defines the minimally acceptable price change for an instrument from one transaction to another, ticks come in different orders. Among these other ticks are: Up-Tick, Down-Tick, Zero-Plus-Tick, Zero-Minus-Tick. These designations can have significance for trading besides being descriptive. Ticks and their rule implications can impact program trading and short selling activities.
  
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